Touch detection device, display device with touch detection function, and electronic apparatus

Abstract

According to an aspect, a display device with a touch detection function, during a touch detection operation, derives a signal value based on the touch detection signal at coordinates at which the pointer is in contact with or in proximity to the device and in the vicinity of the coordinates; derives a three-dimensional waveform which employs a magnitude of the signal value as a height direction; derives a straight line in the three-dimensional waveform, the straight line connecting between a barycenter based on a volume of a three-dimensional waveform portion equal to or greater than a first threshold value in the height direction and a barycenter based on a volume of a three-dimensional waveform portion equal to or greater than a second threshold value in the height direction; and detects based on the straight line whether the pointer is in contact with or in proximity to the device.

Description

CROSS REFERENCES TO RELATED APPLICATIONS[0001]The present application claims priority to Japanese Priority Patent Application JP 2013-111352 filed in the Japan Patent Office on May 27, 2013, the entire content of which is hereby incorporated by reference.BACKGROUND[0002]1. Technical Field[0003]The present disclosure relates to a touch detection device, a display device with a touch detection function, and an electronic apparatus which enable an external approaching object to be detected in response to a change in capacitance.[0004]2. Description of the Related Art[0005]In recent years, attention has been focused on a display device with a touch detection function which has a touch detection device or a so-called touch panel provided on a display device such as a liquid crystal display device or which has a touch detection device and a display device integrated with each other. On the display device are displayed various types of button images or the like to replace typical mechanica...

AI Technical Summary

Benefits of technology

The present patent is about a device that can detect touch using a change in capacitance. It can be used in touch detection in display devices and electronic devices.

Problems solved by technology

Thus, in the touch detection device that employs a method for determining a touch point on the panel surface based on the area barycenter of such a region, there is a possibility that a difference between the determined touch point and the contact point or proximity point intended by a user occurs, thus possibly preventing improvement in the control accuracy by a user.

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